Fiduciary Services for US Americans (Lugano)

I am looking for a credible fiduciary company that handles US Americans. My tax situation is not particularly complex, however i do need to file several federal returns for years past. I would also like to be advised on matters of financial planning, like 3rd pillar, yes or no, etc. English would be a plus, but I do speak italian and german as well. Any ideas would be greatly appreciated.